is emailing webmasters via Search Console telling them to remove noindex statements from their robots.txt file.
The email reads:
“has identified that your site’s robots.txt file contains the unsupported rule “noindex”. This rule was never officially supported by and on September 1, 2019 it will stop working. Please see our help center to learn how to block pages from the index.”
These notices come just weeks after Googlebot is still obeying the noindex directive and will continue to do so until September 1st. Site owners will then need to use an alternative.
Technically, as stated in the email,was never obligated to support the noindex directive in the first place. It’s an unofficial rule that adopted when it started to become widely used by site owners.